Swaging is the forming of bullets at room temperatures with great pressure thru alot of leverage in special heavy presses... If you want to cold form lead bullets or jacketed lead bullets... Mr. Corbin, Dave at corbins.com has extensive knowledge in book form on the web site for review or down loading or

His brother Richard sells similar equipment and has information on his web site... thru bulletswager.com or rceco.com ... If you just want to "go cheap" and make a product of possibly slightly less percision, ch4d.com sells dies for use in reloading presses (both the corbins do too).
As said, if you are thinking of the old "melt the lead" / "pour the liquid lead into a mold"... that is called "casting" and there is another forum for that. (To be fair, swagers, sometimes, cast cores for swaging... if you care.) Enjoy. luck.